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In this talk, I will present the notion of affine Weyl groups and
Kazhdan-Lusztig cells. Using a geometric presentation of an affine
Weyl group, I will then establish, in the unequal parameter case,
an upper bound for the number of left cells in the lowest two-sided cell,
which generalizes the results of Bremke, Xi and Shi.
(The usual lunch after the Seminar will not take place, because of the Honours Information Session.) See the Algebra Seminar web page for information about other seminars in the series. Anthony Henderson [email protected]. |
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